US7539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: —
•
Filing: —
•
Granted: 1850-07-30
•
Expires: 1867-07-30
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:50
CPC Classifications
A; A47; A47C; A47C13/00; A47C13/005; A47C11/00; A47C11/005; B; B60; B60N; B60N2/00; B60N2/24; B60N2/242
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1853-07-29 | 1854-01-28 | 1854-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1857-07-29 | 1858-01-28 | 1858-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1861-07-29 | 1862-01-28 | 1862-07-30 | $7700.00 | Window Closed / Lapsed |